Disclosed is an ultraviolet oxidation device for decompositing organic materials present in water in low energy consumption and low cost, an ultrapure water production device using the same, an ultraviolet oxidation method, and an ultrapure water production method. A method in accordance with one embodiment can include determining that the movement disorder affects the patient’s gait, oral functioning, andor other functioning, and applying electrical stimulation proximate to the interhemispheric fissure, the Sylvian fissure, or between the two fissures, respectively. Data indicative of a selected analytic routine is received via a second user interface region that displays a plurality of candidate analytic routines. Normalized spectrum values indicative of narrowband tones that occur in windows of frequency bins encompassing frequencies lower and higher than each of a lowest resonant frequency and its harmonics and with a specified degree of variance with respect to frequency separation therebetween, are filtered out.